Well you are very lucky. Because I have never met a synthetic bodhrán that didnt sound like a childs toy!
Speaking of playing in the rain, I did used to own a 16inch with a greyhound skin head. It wasn't tuneable but seemed far more forgiving of the damp that any goat skin I have owned. That is to say every other bodhrán I've owned. Fiberskyn aside that is.
Anyone know what those Remos are like with the black synthetic head?